CATALYTIC HYDROTREATMENT OF HYDROCARBONS TO LUBRICATING OILS

摘要

Lubricating oils having a viscosity index lower than 90 are prepared by catalytic hydrotreatment of aromatic extracts from lubricating oil fractions with the use of fluorinecontaining bimetallic catalysts on alumina as the carrier, which catalysts have been prepared according to a closely defined method starting from an alumina hydrogel.